Hello everybody please help me (this is 6th grade math)
​

How many $20 bills do you need to have to make $280

Twenty points. suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet

4+(2+x) can you me solve this problem